Self-closing valve.



No. 844,180. PATENTED FEB. 12,1907.

N. NILSON.

SELF CLOSING VALVE.

APPLIGATION FILED AUG.16. 1906.

WITNESSES v ji 35 /NVENTOR i /V/L$ lV/LSUA/ xwwm 70a, 4%Z

A TTOHNEYS UNITE STATES PATENT oFFioE.

NILS NiLsoN,oF NEW YORK, N. Y., ASSIGNOR or FIFTY ONE-HUNDREDTJELS v TO-CHARLES GRIMSHAW, YORK, N.

SELF-CLOSING VALVE.

Iatented Feb. 12, 19,07.

To all ugh/m it may concermy Be it known that I, NILS NiLsON, a citizen of the United States, and a resident of the city of New York, (City Island, borough of the Bronx) in the county and State of New York, have invented-a new and Improved Self-Closing Valve, of which the following is a full, clear, and exact description.

This invention relates to self-closing valves, and is particularly useful in connection with devicesof this character adapted for flushing. closets, urinal-bowls, and the like.

The object of the. invention isto provide a self-closing valve simple, strong, and durable in construction, which may 'be operated manually to permit the flow of water through the same, an which automatically closes the inlet to the valve in. a gradual manner, there-. by permitting a slow afterflow. 9

Afurther object of the invention is to pro vide' a device of this character in which the inlet is closed through the rotation of a motor whichis actuated by the flow of the Water; and which rotates-a cam-wheel adapted to close the inlet-valve. Y

, The invention consists in the construction to be-more fully described hereinafter and particularly set forth in the claims;

Reference is to behad to the accompanying drawings, forming a part of this specif c-ation, in WhlOll similar characters of reference indicate corresponding" parts in all the figures,in'which ings,I provide a casing 1 preferably cylindrical view of a detail, and Fig. is

section of a part of a modified form of the de' Figure Tie a front elevation of the valve,

showing a part removed. Fig. 2 is a vertical crosssectidh'. Fig. 3' is: a vertical cross-section on the line 3 3 of Fig. 1.

a vertical crossvice. g

Referringmore particularly to the drawin form, having a chamber 2 therewithin. The open ends of the cylindrical casing are closed by a back plate 3 and. a front plate 4,

secured to the casing in the usual, manner,

with screws or bolts. 'At the upper side of the casing is an inlet-pipe 5, havin a threaded end upon which is mounted an in et-' valve casing 6, which has a lateral extension 7, provided with an opening 8, through'which water may'enter from the supply-pipe. I On the inner side of the casing 6, at the Fig. 4 is a plan lower portion of-the same, is a valve-'seat-9, upon which a valve normally rests, shutting off communication between the. supply and the chamber 2. i A head 11 is mounted upon the-upper part of the inlet-valve casing 6 and provides a guide 12 for a rod 13, ex- ,tending upwardly. from the valve, which is of conventional form. A rod 14 has a threaded end 15 screwed into a suitable opening in the under side of the valve and extends through the inlet-pipe into the j chamber 2, having a flattened section 16, adaptedto act as a guide within the inlet-pi e, while permitting the flow of water therethrough. A plug '17 is located in an opening in the front plate 4, adjacent to the rod-section" 16. A in 18, having a lateral offset end 19, passes t ough the plug 17 and is adapted to be rotated by means of a lever 20, rigidly mounted on the end of the. pin outside of the plug 17. The oflset end 19 of the pin 18 is .located ina transverse slot 21 of the rod-section 16. The pin 18 passes through the plug 17 to one side of the center line of the inlet-pipe 5. If the pin is rotated, theoffset end raises or. lowers the rod in the inletpipe, the end 19 moving transversely within the slot 21 to provide for its lateral movement. By this means the valve may be opened manually by directly turning the rod or by achain attached to the same'in the usual manner for use in connection with closets or the like.

' -Within the chamber 2 is a shaft 22, having one end seated in a bearing 23', formed inte- "gral with the back plate 3, While the other end is pivotally mo unted in a bearing plate 24, located adjacent to the front plate 4. A cam-wheel 25, having a recess 26 and a s iral periphery 27, is mounted rigidly upon the shaft 22. The spiral. constituting the rim of thecam-wheel 1s atits greatest radial distance from the center of the same at one edge ofthe'recess 26,- while it is at the least radial distancefrom the center at the other edgeof the recess; The end of the rod 14 hasan offset member 28, forming with the bod of the rod a fork, within which is pivotally mounted a grooved roller 29, adapted 'to engage with the rim of the cam-whee as shown most clearly in Fig. 3, and to be received by the recess 26 and normally to rest within said recess when the valve is closed,

as'shown in Fig. 1.

gear-wheel is rigidly mounted upon that by thi the shaft 12 in'front of thecamwheel 25 and is separated from the same by a washer 31.

I The lower side of the casing 1 has anoutletpipe 32, communicating int-he usual manner with the pipe 33, leadingto the closet-bowl. Within the outlet-pipe 32 is a chamber 34,

within which is located a small water-turbine 36 is rotatably moumed on a pointed pin 38,

- secured in a transverse member 39, mounted at the-end ofthe outlet-pipe. 32.- The turbine is of conventional form and comprises a plurality of blades 40, by which it is rotated when the water flows, through the outletpipe. A'worm 41 is rigidly mounted upon the shaft 36 and engages with the teeth of the gear-wheel 30.

When it is desired to use the device, the

inlet-valve 10*is raised from the valve-seat 9 by means of the lever 20. This permits the supply-water to flow through the inletpipe into the chamber 2 and out of the same through the outlet-pipe 32; When the valve 10 is opened, the rod 14 is correspondingly raised, thus bringing the roller 29 out of the recess 26.. As soon as the water flows through the outlet-pipe the motor therewithin is rotated, and this rotation is communicated to the cam-wheel 25" by means of the worm and wheel 41 and 30. Thus, as soon as the water begins to, flow ,the'cam-wheel begins to rotate and the roller 29 comes into engagement with the spiral periphery, engaging first at that portion of the spiral at the great est radial distance from the center of the. wheel, whereby at first the valve is kept open a maximum distance. As the cam-wheel revolves the radius of the spiral decreases, and thus the inlet-valve 10 is gradually re turned to its seat until the cam-wheel completes its revolution, when the roller again slips into the recess 26, thereby completely closing the valve 10. It will be understood. gradual closing is efiected the slow after flow necessary for the successful operation of or other bowl with the necessary quantity of\ water, for if the 'water is allowed. to,'rush through the seal without the. afterflow the seal does not obtain the requisitewater to make it o erative.

When t e valve is opened means of the lever 20, the rush of water through the chamdeviees of this character in order to provide the water seal of the closet.

ping back into the recess again, and thereby;

To obinstantaneously reclosing the valve.

viate this, I provide a member 42, pivoted, by means of a screw-pin 43, to the cam-wheel 25 and between the latter and the gearwheel, The member 42 has a laterallyprof j'ecting toe 44 at one end and a slot 45 at the opposite end, which is weighted and is heavier than the end having the toe. A pin 46, projecting laterally from the cam-wheel, 1s adapted to lie adjacent to the recess 26, when not displaced,.as shown in Fig. 4. When the roller rests within the recess, the member 42 is in the position shown in'Fig. 1 with the toe displaced from the recess-26. Then the valve is closed and the rod ,16 is in-its normal position.- When i the inletvalve 10 is openedand theroller i's withdrawn from the recess 26, the Wei hted end of the member 42 instantly'swingst e same about the pivot 43 into positionwith the toe adjacent to the re cess. ",Thus if the lever 20 is. released the roller cannot return into the recess, but falls upon the toe, the outer edge of which coincides with the spiral at the edgeof the recess. Thus when the cam-wheel begins to turn the periphery passes along under the roller until the recess again reaches the same after one complete revolution, when the roller pushes I aside the member 42 into the position shown in Fig. 1' and enters the recess completely to close the valve.

While my invention is artic'ularly applicable for use asa fiush-va ve, it may also be used as a liquid-measuring device, for it will be understood that the quantity of water or other liquid which flows through the same depends upon the rapidity with which the cam revolves to return the roller to the recess and the pitch of the spiral constituting the periphery of the cam-wheel, as the pitch of the spiral governs the rapidity with which the valve 10 is returned to the ,seat 9. If

necessary, I can provide the valve'with an air-chamber located near the inlet-seal to avoid a water-hammer within the-valve and to regulate the ressure of the flow therethrough. It wi 1 be understood that any other gearing intermediate of the'motor and the cam-wheel may be emplo ed to effect-the purpose. The quantity 0 liquid which iiows throngh the valve is also dependent upon this gearing, for ifthe rotation of the motor is transmitted to the cam-wheel at a reduced rate a greater quantity of liquid will flow through thevalve.

Fig. 5 illustrates a modified form of the device in which'the outletipe 32 is located centrally with respect to t e chamber and in which the shaft 36, which substantially coincides with the vertical center line of the chamber, has at its upper extremity a pinion- 47, the teeth of which mesh with the teeth of" located in the slot-45, The toe 44 is claim as new and desire to secureby Letters a 1. A device of the class described, comprising a chamber having an inlet and an outlet, a valve adapted to closesaid inlet and having a rod extendinginto said chamber, a cam-Wheel Within said chamber engaging with said rod' and adapted to move the same by its rotation, and a motor oper-, ated by the .flow of Water through the device and adapted to rotate said cam-wheel.

2. A device ofthe class described, coin {)rising a chamber having an inlet and an out-. et, a valve adapted toclose said inlet, and having a rod extending into said chamber, a cam-.Wheel within said chamber engaging with said rod and adapted to move the same by its rotation, a motor operated by the flow of Water through the device, and means for transmitting the rotation of said motorjto' said cam-wheel. a r

3. A device of the class described,compris ing a chamber having an inlet and an outlet, a valve adapted to close said inlet and having a rod extending into said chamber, a

cam-Wheel Within said ch'amber having a re-. cess adapted to receive said rod When the valve is closed and being adaptedto return said rod to said recess by its rotation, when the valve is open, and means actuated by the flow of water through the device,for rotating said'wheel. Y i

4. A device of the class described, comprising a chamber having an inlet and an outlet, a valve adapted to close said inlet andhaving a rod extending into said chamber,

,, and provided at its end with a roller, a camwheel within saidchamber, having a spiral periphery and a recess ada ted to receive said rollerwhen the valve is c osed, and being adapted to return saidroller to said recess by'its rotation, when the valve is open, andsaid device, to'rotate saidwheel.

5. A device of theclass described, coma means actuated by the flow of'water through j prising a chamber having an inletandian outlet, a valve adapted to close said inlet and havin a rod extending into said chamber provi ed at its end with a roller, a cam-wheel Within said chamber having a-spiral-peri h cry and a recess adapted to receive said r0 ler when the valve is closed, and being adapted to return said roller to said recessby'its rota-J tion when the valve is open, means o'n' said wheel to prevent the return of said roller to said recess before the 'wheel has completed one revolution, a motor actuated bythe flow of water through the device, and means for transmitting the rotation of said motor to said wheel.

.pletes a rotation. a

8. In a device ofthe class described, comjupon said periphe 6. A device of the class described, having an inlet and an outlet, a valve adapted to,

close said inletand having a' rod projecting into said chamber, a cam-wheel having a recess and a spiral periphery, said rod resting in said recess when said valve is closed, a

member pivoted to said wheel and havin a 7. A device of the class described, com- I prising a chamber having an inlet andan outlet, a valve-adapted to close said inlet and havin a rod projecting into said chamber rovi ed at its end With a roller, a cam-wheel aving a recess andaspiral periphery, said roller being adapted to rest in said recess when said valve is closed, means for raising said rod to 0' en said valve, a member pivoted to said Wheel, having a toe and a weighted end adapted to swing said toe adjacent to said recess to ride said roller onto said periphery', and 'meansactuated by the flow of water through. the device for rotating the.

said Wheel, said roller displacin said toe and enterlngisald recess when sai wheel 00m prising a chamber having an inlet and an outlet, a valve adapted to closesaid inlet and having arod extending-into said chamber, a cam-wheel within said chamber having a recess adapted to receive said rod when the valve is closed and'being adapted to return said rod to said recess b its rotation, a motor adapted to be actuate b the flow 'of water through the device and aving a shaft ex tending into said-chamber provided with a worm, and a gear-Wheel rigid with said camwheel and engaging with said worm.

A device; of the'class described, comprising a chamber havingv an inlet and an outlet, a valve adapted to close said inlet and havin "a rod extending into said chamber riphery, said' roller being adapted to ride recess when said in et-val've is closed, a'gear- Wheel rigid with said cam-wheel, a motor andto rest within said 7 I15 adapted to'be actuated b the flow of water I throughthe device an vin a shaft extending-into said chamber, an ..a worm on said shaft engaging with said gear-Wheel. 1

prising a chamber having an inlet and an havin a rod p'rojecting into'said chamber '10.,A-"device of thev class described,com-

provi ed with a roller, a-cam-wheel within said chamber h'avin a recess, and a spiral periphery', said roller eing adapted to rest in' said recess when said valve rests upon said valve-seat, and to ride upon said peri hei'y when said valve is open, said cam-whee having' a member 'pivoted'thereto provided with a toe and a Weighted end, said toe being adapted to displace said i'ollerionto said periphery when said valve is open, a gear-Wheel rigid with said camheel, a motor adapted to be actuated by the flow of water thfough the de- 10 vice and having a shaft projecting into said chamber, and a Worm 1153011 said shaft engaging with said gear-whee in testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses. v v

I NILS NILSON.

Witnesses BigNJM. E. HAYDOOK, HAROLD BJEROKE. 

